fitzg-erald



(No Model.)

- 2 Sheets--Sl1eet I.

FITZGERALD. HEATING AND VENTILATING CARS. I No. 252,752. Patented Jan. 24,1882

WITNESSES 1.2V VENTOR mphor Wahingtun. u a

2 Sheets-Sheet 2.

(No Model.)

M. D. FITZGERALD. HEATING AND VBNTILATINGUARS.

.No. 252,752. Patented Jan. 24,1882.

WITNESSES gmdttomey Un te STATES.

ATENT eaten.

MICHAEL D. FITZGERALD, OF BLOOMINGTON, ILLINOIS, ASSIGNOR TO MAGGIE R. FLAGG, OF SAME PLACE.-

HEATING AND VENTILATING CARS.

SPECIFICATLON forming part of Letters Patent N0. 252,752, dated January 24, 1882,

Application filed November 7, 1881.

To all whom it may concern Be it known that I, MICHAEL D. Frrzonn- ALD, of Bloomington, in the county of McLean,

and in the State of Illinois, have invented certain new and useful Improvements in Heating and Ventilating (Jars; and I do herebydeclare that the following is a full, clear, and exact description thereof, reference being had to'the accompanying drawings, and to the letters of reference marked thereon, making a part of this specification.

.My invention relates to certain new and useful improvements in the class of heaters and ventilators more especially-designed for railroad-cars; and it consists in novel features of construction and combination and arrangement of parts, all as will be hereinafter fully described, and specifically designated in the claims. I

Referring to the accompanying drawings, Figure 1 represents a sectional elevation of my improved heater and ventilator on line to 10, Fig. 3. Fig. 2 is a side elevatiom Fig. 3 is a sectional elevation on line 00 00, Fig. 2. Fig. 4. is a horizontal section on line y y, Fig. 2. Fig. 5 is a horizontal section on line 22, Fig. 2; Fig. 6, a horizontal section on line 20 20, Fig. 3.

In the drawings, A represents a suitable heater or furnace; A, the ash-pitbottom; a a, the furnace and ash-pit doors, and a the smoke stack or pipe.

B represents the base, extending in rear of the heaterorfurnace; and C, an outside casing, whichentirely surrounds the top and sides of the heater or furnace, and attached in any suitable manner to the base B. The base B is pro vided with a closed bottom, and on one side with opening b, and also has connected to and communicating therewith, at its rear extended end, a ventilating-shaft, D, which extends up through the top or roofof a car, and is provided at its upper end with a ventilating cowl or hood, 6?, arranged to move or swing properly with the wind. The base 3 is also provided on one side with an air-chamber, I), which communicates with the space between outside casing, O, and heater or furnace; and said chamber 1) is provided with an opening, 11?, controlled by a damper, b for admittingfresh (No model.)

into the car through openings 0 in the top of said casing, controlled by a register, 0.

A register, 0 arranged in the casing O, on the opposite side from opening b (see dotted lines, Fig. 2,) admits of the better or purer portions of the'air in the car being passed between casing and heater or furnace and out through the top of the easing into the car again, so that said air can be heated over and over again when desired.

A pipe, E, provided with avalve or damper, e, connects the space between the casing and heater or furnace with the ventilating-shaft D.

The ventilating-shaft is provided with slidedampers cl 'near the roof of car, and the smoke stack or pipe passes up through the up per portion of the ventilating-shaft, for purposes to be hereinafter described.

The fresh air is admitted through opening W, as before described, and the damper I) regulates the amount of fresh air to be admitted to the space between casin g and heater or furnace, and. may shut ofi' entirely the outer or fresh air if the car is little occupied. In the latter case the register 0 of the casing is opened, and the air in the caris admittedinto the space between casing and heater or furnace, and warmed and passed into the car through the openings in top of easing, so that the air can be warmed over and over again,or partially so, as hereinafter described.

If the car is crowded and nothing but outside fresh air is to be heated, the register 0 is closed and damper If opened, so as to admit the fresh air. 'The air in the ventilating-shalt being. rarefied by the heat from the smoke-pipe passing up through the upper portion of said shaft, passes out into the open air, together with the products of combustion from thesmokepipe, and in consequence thereof the foul air from below in the foul-air chamber B rushes into the ventilating-shaft to take its place, thereby taking the fouler and heavier portions of the air from the bottom of the car-the carbonic-acid gas, dad-through opening 1) into chamber B, and thence into the 'e-ntilatingshatt into the open air. I

Ifit is desirable to warm over a portion of the air in the car, the register 0 can also he opened, when the lighter and better portions of the air in the car will be taken into the easing and, with the outside air, he warmed anew, and both pass through the top of easing into the car.

If the air in the car gets too warm, the register in top of easing can be closed entirely,

and thus the heated air shut off from the car,

and by opening valve ordainper e be discharged through pipe E into the ventilating-shaft.

If desired, the sliding dampers d can be opened, so that the air in the car will pass di rectly into the upper portion of ventilatingshaft and thence into the open air.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a heater and ventilator for cars, the combination of the base-chamber B, having opening 1), its rear extended portion having ventilatingshaft D communicating therewith, heater or furnace A, having smoke-pipe a extending through upper portion of'ventilatingshaft, casing O, surrounding top and sides of heater or furnace and having openings 0 through the top thereof, and register 0 and airchamber 1), located in base B, and communicating with space between casing and heater or furnace, and provided with opening b and damper b substantially in the manner, as and for the purpose herein shown and described.

2. In a heater and ventilator for cars, the combination of basechamber B, having opening 1) and ventilating-shaft D communicating therewith, heater or furnace A, having smoke.

pipe extending through upper portion of ventilating-shaft, surrounding casing 0, having registers a 0 connecting-pipe E, provided with valve or damper e, and air-chamber I), having opening I) and damper I), said pipe E and airchamber 1) communicating with the space between casing O and heater or furnace, substantially in the manner as and for the purpose herein shown and described.

3. In a heater and ventilator forcars, the combination of base-chamber B, having opening I), ventilating-shaft D communicating therewith, and having damper or dampers d near its upper end, and movable cowl or hood d, heater or furnace A, having smoke-pipe extending through upper portion of shaft D, outside casing 0, having registers 0 a, pipe E, havingvalve or damper e, and air-chamber lo, having opening I) and damper b said pipe E and air-chamber b communicating with space between casing and heater or furnace, the several parts constructed and arranged relatively to each other, substantially as herein shown and described.

In testimony that I claim the foregoing I have hereunto set my hand this 12th day of May, 1881.

M [GIIAE L D. FlTZGE RALD.

Witnesses:

THos. SLADE, H. E. HADLEY. 

